Modern understanding of gut-brain axis increasingly centers on the nervous system — specifically, the chronic dysregulation that underlies many gut-brain axis presentations.
The Nervous System in Gut-Brain Axis
The autonomic nervous system has two primary states relevant to gut-brain axis:
Sympathetic activation ('fight or flight'): When chronically activated, drives anxiety-type gut-brain axis
Parasympathetic ('rest and digest'): The recovery state — undermined by gut-brain axis
Dorsal vagal shutdown: A third state — freeze/collapse — associated with depression-type gut-brain axis
Signs of Nervous System Dysregulation in Gut-Brain Axis
Chronic hyperarousal (always 'on edge'), difficulty relaxing even in safe environments, and feeling perpetually exhausted despite rest.
Regulating the Nervous System for Gut-Brain Axis
- Breathwork: Directly activates the parasympathetic nervous system
- Cold exposure: Controlled cold activates the vagus nerve, improving gut-brain axis
- Safe social engagement: Co-regulation through trusted relationships
- Movement: Discharges sympathetic activation accumulated in gut-brain axis